Honeycomb structure and method of producing the same
a honeycomb and structure technology, applied in the field of honeycomb structure, can solve the problems of difficult to handle the honeycomb main body, difficult to separate the coating layer, and breakage of the exposed partition wall, so as to achieve the effect of preventing the separation of the coating layer and producing the same easily and inexpensively
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example 1
[0073]A cordierite raw material containing talc, kaolin, and alumina as the main raw ingredients was mixed with water, a binder, a surfactant, and the like. The components were dispersed / mixed and kneaded to obtain a forming raw material. The forming raw material was extruded in the shape of a column using a kneading machine, and then extruded using an extruder to obtain a tubular cell (honeycomb) formed product having a partition wall partitioning a plurality of cells serving as fluid channels and an outer wall integrally formed with the partition wall. A honeycomb structure was produced using the resulting formed product. Specifically, the resulting formed product was dried and cut to a specific length to obtain a dried product. After alternately plugging the cells on each end face of the dried product, the resulting product was fired to obtain a fired product. In this example, the outer wall was provided with cut portions by reducing the amount of forming clay for the outer wall ...
example 2
[0100]A honeycomb structure configured in the same manner as the honeycomb structure according to Example 1 was obtained, and the outer circumferential surface (outer circumferential surface of the coating layer) of the honeycomb structure was ground to obtain a honeycomb structure according to Example 2. The resulting honeycomb structure was subjected to measurements and evaluations of various property values in the same manner as in Example 1. The measurement and evaluation results are shown in Table 1. The honeycomb structure according to Example 2 exhibited particularly excellent external diametrical shape accuracy.
examples 3 to 7
[0103]Honeycomb structures (Examples 3 to 7) were produced in the same manner as in Example 1 except for forming cell structures provided with cut portions of different shapes by changing the percentage of reducing the amount of forming clay for the outer wall forming portion when extruding the cell structure. The shape of the cut portions on the surface of the cell structure obtained by extrusion was determined. FIG. 7 is a photograph of the surface of the cell structure obtained in Example 3, FIG. 8 is a photograph of the surface of the cell structure obtained in Example 4, FIG. 9 is a photograph of the surface of the cell structure obtained in Example 5, FIG. 10 is a photograph of the surface of the cell structure obtained in Example 6, and FIG. 11 is a photograph of the surface of the cell structure obtained in Example 7. The resulting honeycomb structures were subjected to measurements and evaluations of various property values in the same manner as in Example 1. These honeycom...
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